getting error while doing nagios upgrade

[ravish78]

we are getting below error while doing nagios upgrade
please suggest

tmproot@usa0300lv886>./upgrade
OLD VERSION: 311
Loaded plugins: product-id, rhnplugin, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
There was an error communicating with RHN.
RHN Satellite or RHN Classic support will be disabled.
Error communicating with server. The message was:
Connection refused
http://usa0300lv100.na.xerox.net/reposi ... repomd.xml: [Errno 14] PYCURL ERROR 7 - "couldn't connect to host"
Trying other mirror.
Setting up Install Process
Error: No Groups Available in any repository
tmproot@usa0300lv886>

[lmiltchev]

This system is not registered to Red Hat Subscription Management.

Is your system registered with Red Hat?

[sreinhardt]

Actually this looks like yum is having an issue accessing your internal repos. Can you do a yum update successfully?

[ravish78]

This issue is resolved.the server is located in private network space and we used tunnel to connect and update it.

You may close this too.